Oil filter



C. WOOD OIL FILTER 2 sneetsv-sheet 1 Filed March 1o LLI l m I TTOR www @et 23, E923.

C. WOOD OIL FILTER Filed March lO 1920 2 Sheets-Sheet 2 WHHHIHHVIHIHHHHHHHHH INVNTOR.

`constantly during vthe operationV of r apparatus.

Patented @et 23, i923,

NETE@ STATES I anima earner oraree CARVER VV'OO), OF FORT WAYNE, INDIANA, SSIS-NOR TO WAYNE OIL TANK AND PUMP COMPANY, F FORT WAYNE, INDIANA, A CORPORATION OF INDIANA.

OIL FILTER.

Application led March 10, 1929. Serial No. 364,656.

To all whom it may concern:

Be it known that I, CARVER Woon, a citi zen of the United States, residing at Fort Wayne, in the county. of Allen and State of Indiana, have invented new and useful Improvements in Oil Filters, of which the following is a specification.

My invention rela-testo oil filters of the type known as batch filters, that is, those adapted to treat a batch of dirty oil at a time7 instead of so-called continuous filters, that is, those having dirty oil fed to them the In batch filters, the dirty oil is poured into a settling reservoir suitably provided with steam pipes and the oil heated sufiiciently thru the steam pipes, to cause the dirt to most readily separate from the oil. Then the heat is turned off and the dirty oil .allowed to stand a sufficient time to allow the dirt to settle to the bottom of the reservoir, usually over night. Then the oil, freed from the precipitated dirt, is piped off to the cloth or other strainer for final treatment.

But it has been found when handling oils that congeal when chilled, such as cutting oils, that these strainer cloths do their work imperfectly, slowly and often fail to work after a slight amount of the oil to be treated has passed thru them, because thee-old oil congeals upon the filter cloth, rendering it impervious to the passage of more oil thru it.

In order to overco-me this difculty, steam is sometimes re-applied to the precipitation reservoir, but no matter how gradually, agitation results and a part,'at least, of the beneficial effect of precipitation is lost.

My invention consists structurally of a simplified and co-mpact apparatus of few parts for the purification of the dirty oil resulting from mechanical operations, as in machine shops, etc., that includes all the necessary adjuncts in a single casing of comparatively small dimensions, arranged in such relations as to attain superior results in purification, and at the same time to be removable as a whole to any position deemed more convenient of use.

To this end the invention consists of a tank of preferably substantially cubical form, the forward upper part of which is partitioned off to constitute a receiving and precipitating chamber containing a screen basket through which the dirty oil first passes; an exterior steam jacketed gravity conduit connecting said chamber at about the level of the bottom of the. screen basket, rearwardly and downwardly andre-entering the tank and passing upwardly into a fixed filter strainer which discharges at its top into the main tank at about the level of the intake of said conduit.

Minor features such as sampling outlets, valves, steam coils, etc., will be explained later,

The space in the main tank excepting that occupied by the precipitating chamber is useful as containing a considerable body of purified oil in which disturbance is minimized by the solidity and entire absence of movement of the main tank which rests with broad base upon the fioor, and by the relatively large body of contained .oil in which precipitation still continues and renders the ultimate purification more complete and perfect than can otherwise be attained.

My invention is illustrated in the accoml panying drawings, in which Figure 1 isa side elevation of a batch filter, showing my improvement in position for use,

Fig. 2 isa top plan view of the same.

Fig. 3 is a cross section thru the steam jacketed conveyor pipe on the line 3 3 of Fig. 2.

Fig. l is a side elevation of the filter with nearly all the casing cut and broken away to expose the interior mechanism and show the relation of parts to each other; and,

Fig. 5 is a top plan view with the top of the casing cut away showing the relative position of the parts.

Referring now to the drawings, A, is a precipitation reservoir, with a cover a, adapted to be easily removed to pour in the dirty oil, a steam coil al; with inlet a2, and outlet a3, and a valve at, to control the admission of steam to the coil thru the pipe b, from a source of supply not shown. A screen basket all, preferably of fine mesh wire, strains the incoming dirty oil. A sampling outlet lip a, is controlled by a plug valve as, adapted when open to permit a thin film of oil to fiow out over the outlet lip a", and thus allow the operator to `sediment has been precipitated in the reservoir A,fto the Aiilter'strainer C, thru its inlet pipe c.

steam Vj acket B, connectedfthru the valve 1,

'to the steam supply pipe b, and provided at The oil that flows into the filter strainer C, thruy its lower end `With'a steam outlet b2.

the inlet pipe C, 'passes thru the filter cloth c1, Where itdeposits its remaining'impurities, and the puriiied oiloverfl'owsthru the outlet: c2, into the storage reservoir D A cover 03, affords easy access to the filter strainer. A cleaneout plug al, affords easy y access to the tanl; D, forcleaning. A iioat E, and indicatore, keep thel operator advised of the quantity of 'puriiiedoil in the tank D.

I claim as my invention and ydesirevto secure by Letters Patent ofthe Unitedr States c l.l Ina batch filter of thevcharacter indicated, inY combination With a general con 'tainer, having a j precipitation chamber Within the same; fa filter strainer also Withnection.YN Y The drain pipe alo, is provided vvith a The iilter strainer may be of any desired form.

in said container, an external gravityv connection between said precipitation chamber Vand filter and means for applying external heatA to saidY gravity connection,

25 In combination with a. batchfilter having a precipitation reservoir With means therein for heating the contents of'same, and a filter strainer, both in a single casing; a connection-outside said casing to convey by gravity partly clarilied oil from the.

precipitation reservoir to the filter strainer, and means for applying heat to said con- -lny combination With al batch'filter havf ing a' primary strainer,ga, precipitation reservoir, means for heating the contents of reservoir, and a filter strainer, all in avsingile casing; .a connection outside said casing to'conveypartly clarifiedoil from the precipitation reservoir to the lilter strainer, and means for Aheating said connection.

4. In combination WithV a batch filter having a precipitation reservoir, means Within said'reservoir fory heating the contents of said reservoir, a filter strainer, and' a clarified oil storage reservoir, all,l inV a single casing;Y a Steamvjacketed loil connection outside said casing to convey partly clarified oil rfr onithc p-recipitation reservoir to the filter strainer. Y

Y In testimony vvhereofl have hereuntoset my. ha d in presence of tvvd subscribing Witnesses. i y Y Y CARVER W,OOD. Witnesses:

LAWRENCE liARlm,v JOHN R. WERNHorn 

